Adobe Illustrator in your list of installed or available apps. Click the three dots ( ... ) next to the Open/Install button. Select "Other versions".

the 2021 version (usually version 25.x) and click Install . Method 2: Via Direct Download Links (Advanced)

the required Illustrator_2021_enu.zip or .exe file from a reputable, validated source.

Ensure you have enough disk space and that your Windows 10/11 system is up-to-date.

the ZIP file to a known location (e.g., your Desktop). Run the Set-up.exe file.

These are often bundled with malware, ransomware, or viruses.

Guide: Downloading Adobe Illustrator 2021 (Win64) Method 1: Via Adobe Creative Cloud Desktop (Recommended)